This SDS adheres to the standards and regulatory requirements of the United States and may not meet the regulatory requirements in other countries. SECTION 1. PRODUCT AND COMPANY IDENTIFICATION Product name : Tradename/Synonym : Difluoromethane R-32 FC-32 Product Use : Propellant, Refrigerant, For professional users only. Restrictions on use : Do not use product for anything outside of the above specified uses Manufacturer/Supplier : The Chemours Company FC, LLC 1007 Market Street Wilmington, DE 19899 United States of America Product Information : 1-844-773-CHEM (outside the U.S. 1-302-773-1000) Medical Emergency : 1-866-595-1473 (outside the U.S. 1-302-773-2000) Transport Emergency : CHEMTREC: +1-800-424-9300 (outside the U.S. +1-703-527-3887) SECTION 2. HAZARDS IDENTIFICATION Product hazard category Flammable gases Category 1 Gases under pressure Liquefied gas 1 / 12
Label content Pictogram : Signal word : Danger Hazardous warnings : Extremely flammable gas. Contains gas under pressure; may explode if heated. Hazardous prevention measures : Keep away from heat/sparks/open flames/hot surfaces. No smoking. Leaking gas fire: Do not extinguish, unless leak can be stopped safely. Eliminate all ignition sources if safe to do so. Protect from sunlight. Store in a well-ventilated place. Other hazards Misuse or intentional inhalation abuse may lead to death without warning., Vapours are heavier than air and can cause suffocation by reducing oxygen available for breathing., Rapid evaporation of the liquid may cause frostbite. SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS Component CAS-No. Concentration Difluoromethane (HFC-32) 75-10-5 100 % 2 / 12
SECTION 4. FIRST AID MEASURES General advice Inhalation : Never give anything by mouth to an unconscious person. If symptoms persist, call a physician. : Remove from exposure, lie down. Move to fresh air. Keep patient warm and at rest. Artificial respiration and/or oxygen may be necessary. Consult a physician. Skin contact : In case of contact, immediately flush skin with plenty of water for at least 15 minutes. Take off all contaminated clothing immediately. Consult a physician. Wash contaminated clothing before re-use. Treat for frostbite if necessary by gently warming affected area. Eye contact : In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Consult a physician if necessary. Ingestion Most important symptoms/effects, acute and delayed Protection of first-aiders : Is not considered a potential route of exposure. : Anaesthetic effects Light-headedness irregular heartbeat with a strange sensation in the chest, heart thumping, apprehension, feeling of fainting, dizziness or weakness : If potential for exposure exists refer to Section 8 for specific personal protective equipment. Notes to physician : Because of possible disturbances of cardiac rhythm, catecholamine drugs, such as epinephrine, that may be used in situations of emergency life support should be used with special caution. SECTION 5. FIREFIGHTING MEASURES Suitable extinguishing media : Water spray, water fog, Dry chemical, Alcohol-resistant foam, Carbon dioxide (CO2) 3 / 12
Unsuitable extinguishing media Specific hazards : No applicable data available. : Flammable. Cylinders are equipped with pressure and temperature relief devices, but may still rupture under fire conditions. Special protective equipment for firefighters : In the event of fire, wear self-contained breathing apparatus. Use personal protective equipment. Wear neoprene gloves during cleaning up work after a fire. Further information : Cool containers/tanks with water spray. If gas exiting container ignites, Stop flow of gas. Do not put out the fire unless leak can be stopped immediately. Self-contained breathing apparatus (SCBA) is required if containers rupture and contents are released under fire conditions. SECTION 6. ACCIDENTAL RELEASE MEASURES NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL) sections before proceeding with clean-up. Use appropriate PERSONAL PROTECTIVE EQUIPMENT during clean-up. Safeguards (Personnel) Environmental precautions Spill Cleanup Accidental Release Measures : Evacuate personnel to safe areas. Ventilate the area. Refer to protective measures listed in sections 7 and 8. : Should not be released into the environment. In accordance with local and national regulations. : Evaporates. : Self-contained breathing apparatus (SCBA) is required if a large release occurs. If a spill occurs, immediately close valves and remove all ignition sources. 4 / 12
SECTION 7. HANDLING AND STORAGE Handling (Personnel) : Avoid breathing vapours or mist. Avoid contact with skin, eyes and clothing. Provide sufficient air exchange and/or exhaust in work rooms. For personal protection see section 8. Handle in accordance with good industrial hygiene and safety practice. Handling (Physical Aspects) Dust explosion class Storage Storage period Storage temperature : Vapours are heavier than air and may spread along floors. Vapours may form explosive mixtures with air. The product should only be used in areas from which all naked lights and other sources of ignition have been excluded. Electrical equipment should be protected to the appropriate standard. No sparking tools should be used. Take measures to prevent the build up of electrostatic charge. Keep away from heat and sources of ignition. : Not applicable : Valve protection caps and valve outlet threaded plugs must remain in place unless container is secured with valve outlet piped to use point. Do not drag, slide or roll cylinders. Use a suitable hand truck for cylinder movement. Use a pressure reducing regulator when connecting cylinder to lower pressure (<3000 psig) piping or systems. Never attempt to lift cylinder by its cap. Use a check valve or trap in the discharge line to prevent hazardous back flow into the cylinder. Cylinders should be stored upright and firmly secured to prevent falling or being knocked over. Separate full containers from empty containers. Keep at temperature not exceeding 52 C. Do not store near combustible materials. Avoid area where salt or other corrosive materials are present. The product has an indefinite shelf life when stored properly. : > 10 yr : < 52 C (< 126 F) SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Engineering controls : Ensure adequate ventilation, especially in confined areas. Ground all equipment and cylinders before use. Use explosion-proof electrical equipment rated Class I, Group D in Division 1 locations. In Division 2 locations, all 5 / 12
spark-producing electrical equipment must be explosion-proof and rated Class I, Group D. Non-sparking motors need not be explosion-proof. Personal protective equipment Respiratory protection Hand protection Eye protection Skin and body protection : For rescue and maintenance work in storage tanks use self-contained breathing apparatus. Vapours are heavier than air and can cause suffocation by reducing oxygen available for breathing. : Additional protection: Impervious gloves : Wear safety glasses with side shields. Additionally wear a face shield where the possibility exists for face contact due to splashing, spraying or airborne contact with this material. : Fire protective clothing (NOMEX) with antistatic control should be worn when handling this product. Wear protective clothing which covers any other exposed areas of the arms, legs, and torso. Exposure Guidelines Exposure Limit Values Difluoromethane (HFC-32) No applicable data available. SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES Appearance Physical state : gaseous Form : compressed liquefied gas Color : colourless Odor : slight, ether-like 6 / 12
Odor threshold ph Melting point/range Boiling point/boiling range : No applicable data available. : neutral : No applicable data available. : Boiling point -51.7 C (-61.1 F) Flash point : no data available Evaporation rate : > 1 (CCL4=1.0) Flammability (solid, gas) : No applicable data available. Upper explosion limit : 31 vol% Lower explosion limit : 14 vol% Vapor pressure Vapor density Density Specific gravity (Relative density) Water solubility Solubility(ies) Partition coefficient: n- octanol/water : 16,896 hpa at 25 C (77 F) : 1.82 at 25 C (77 F) (Air = 1.0) : 0.961 g/cm3 at 25 C (77 F) (as liquid) : 0.96 at 25 C (77 F) : 4.4 g/l at 25 C (77 F) : No applicable data available. : No applicable data available. Auto-ignition temperature : No applicable data available. 7 / 12
Ignition temperature : 648 C Decomposition temperature : No applicable data available. Viscosity, kinematic : No applicable data available. Viscosity, dynamic : No applicable data available. % Volatile : 100 % SECTION 10. STABILITY AND REACTIVITY Reactivity : Extremely flammable gas. Chemical stability : The product is chemically stable. Possibility of hazardous : Polymerization will not occur. reactions Conditions to avoid : Avoid open flames and high temperatures. Incompatible materials : Alkali metals Alkaline earth metals, Powdered metals, Powdered metal salts Hazardous decomposition products : Decomposition products are hazardous., This material can be decomposed by high temperatures (open flames, glowing metal surfaces, etc.) forming hydrofluoric acid and possibly carbonyl fluoride. SECTION 11. TOXICOLOGICAL INFORMATION Difluoromethane (HFC-32) Inhalation 4 h LC50 : > 520000 ppm, Rat Inhalation Low Observed Adverse Effect Concentration (LOAEC) Inhalation No Observed Adverse Effect Concentration : > 350000 ppm, Dog Cardiac sensitization : 350000 ppm, Dog Cardiac sensitization Skin irritation : No skin irritation, Not tested on animals 8 / 12
Not expected to cause skin irritation based on expert review of the properties of the substance. Eye irritation : No eye irritation, Not tested on animals Not expected to cause eye irritation based on expert review of the properties of the substance. Skin sensitization : Does not cause skin sensitisation., Not tested on animals Not expected to cause sensitization based on expert review of the properties of the substance. There are no reports of human respiratory sensitization. Repeated dose toxicity : Inhalation Rat - No toxicologically significant effects were found. Mutagenicity : Animal testing did not show any mutagenic effects. Tests on bacterial or mammalian cell cultures did not show mutagenic effects. Reproductive toxicity : No toxicity to reproduction Animal testing showed no reproductive toxicity. Information given is based on data obtained from similar substances. Teratogenicity : Animal testing showed no developmental toxicity. Further information : Cardiac sensitisation threshold limit : > 735000 mg/m3 Carcinogenicity The carcinogenicity classifications for this product and/or its ingredients have been determined according to HazCom 2012, Appendix A.6. The classifications may differ from those listed in the National Toxicology Program (NTP) Report on Carcinogens (latest edition) or those found to be a potential carcinogen in the International Agency for Research on Cancer (IARC) Monographs (latest edition). None of the components present in this material at concentrations equal to or greater than 0.1% are listed by IARC, NTP, or OSHA, as a carcinogen. 9 / 12
SECTION 12. ECOLOGICAL INFORMATION Aquatic Toxicity Difluoromethane (HFC-32) 96 h LC50 : Fish 1,507 mg/l 96 h EC50 : Algae 142 mg/l 48 h EC50 : Daphnia (water flea) 652 mg/l 30 d : NOEC Fish (unspecified species) 65.8 mg/l Environmental Fate Difluoromethane (HFC-32) Biodegradability : 5 % OECD Test Guideline 301D Not readily biodegradable. SECTION 13. DISPOSAL CONSIDERATIONS Waste disposal methods - Product : Can be used after re-conditioning. Reclaim by distillation, incinerate, or remove to permitted waste facility. Comply with applicable Federal, State/Provincial and Local Regulations. May be a RCRA Hazardous waste due to the ignitability characteristic. Contaminated packaging : Empty pressure vessels should be returned to the supplier. SECTION 14. TRANSPORT INFORMATION DOT UN number : 3252 Proper shipping name : Difluoromethane Class : 2.1 10 / 12
Labelling No. : 2.1 IATA_C UN number : 3252 Proper shipping name : Difluoromethane Class : 2.1 Labelling No. : 2.1 IMDG UN number : 3252 Proper shipping name : DIFLUOROMETHANE Class : 2.1 Labelling No. : 2.1 SECTION 15. REGULATORY INFORMATION SARA 313 Regulated Chemical(s) : This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313. PA Right to Know Regulated Chemical(s) NJ Right to Know Regulated Chemical(s) California Prop. 65 : Substances on the Pennsylvania Hazardous Substances List present at a concentration of 1% or more (0.01% for Special Hazardous Substances): Difluoromethane : Substances on the New Jersey Workplace Hazardous Substance List present at a concentration of 1% or more (0.1% for substances identified as carcinogens, mutagens or teratogens): Difluoromethane : Chemicals known to the State of California to cause cancer, birth defects or any other harm: none known SECTION 16. OTHER INFORMATION Chemours and the Chemours Logo are trademarks of The Chemours Company. Before use read Chemours safety information. For further information contact the local Chemours office or nominated distributors. 11 / 12
Revision Date : 05/11/2016 The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a warranty or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text. Significant change from previous version is denoted with a double bar. 12 / 12